----_______do you go skateboarding?
----Twice a week
A．How soon B．How far C．How often D．How long
You must look_______ yourself and keep_______
A．for, health B．up, health C．after, healthy D．like, healthy
--How often does Gina take the bus to school?
--She_______ takes the bus because she likes walking there．
A．never B．always C．often D．usually
-When are you going to Hainan?
-I am going there_______ June 8，2009．
A．with B．on C．at D．in
My sister still wants to go to school_______ she is ill．
A．although B．for C．at D．and
Cai Qin has given concerts all over China and the tickets have always_______.
A. sold out B. set out C. set up D. seen off
